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Manual abstract: user guide ELECTRO-VOICE 409-ENGINEERING DA
Detailed instructions for use are in the User's Guide.
[. . . ] Frequency response, uniform from 85 Hz to 18 kHz. Pressure sensitivity, 97 dB SPL at 1 meter (95 dB at 4 feet) on axis with one watt of band-limited pink noise from f3 kHz (ref. [. . . ] 0. 5 dB Secondary Impedance: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 ohms (all) Primary Impedances and Power Drawn, nominal 70v:
15700 15704 10 kohm (0. 5 W)
409 Theile-Small Parameters Free Air Resonance, fs: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Hz Equivalent Volume Compliance, Vas: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. 61 ft. 3 Total Q, Qts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. 54 Electrical Q, Qes: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. 78 Mechanical Q, Qms: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11. 53 Volume Displacement, VD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. 95 in3 Reference Efficiency: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. 71%
15708
15716
15732 1250 ohm (4. 0 W)
5 kohm (1. 0 W)
2500 ohm (2. 0 W)
5000 ohm (1. 0 W)
2500 ohm (2. 0 W)
1250 ohm (4. 0 W)
625 ohm (8. 0 W)
2500 ohm (2. 0 W)
1250 ohm (4. 0 W)
625 ohm (8. 0 W)
312 ohm (16 W)
1250 ohm (4. 0 W)
625 ohm (8. 0 W)
312 ohm (16 W)
156 ohm (32 W)
Recommended Connections
The 405-8H is a nominal 8-ohm impedance loudspeaker with a 16-watt input capability. The 405-4T utilizes an 4-watt, 70. 7-, 100-volt universal line-matching transformer with power taps ranging from 1 to 4 watts.
inches. Larger back volumes will increase the low-frequency output. The frequency response of a 405 in a typical 0. 5-cubic-foot back enclosure is shown in Figure 1.
Mounting
The 405 may be front or rear mounted against either surface of its mounting flange and requires a 110-mm (4. 35-in. ) diameter cutout and a 120-mm (4. 72-in. ) bolt circle, as shown in Figure 7. Normal fasteners up to 5 mm (0. 20 in. ) will fit through the four holes in the frame. The 405 is designed for mounting on standard ceiling speaker baffles.
Recommended Enclosures and Baffles
The 405-8H, 405-4T are designed to fit on standard 4-inch ceiling speaker baffles. [. . . ] 2128, Australia, Phone: +61 2-9648-3455, Fax: +61 2-9648-5585 China: EVI Audio (HK) Ltd. Unit E & F, 21F, Luk Hop Industrial Bldg. , 8 Luk Hop St. , San PO Kong, Kowloon, Phone: +852 2351-3628, Fax: +852 2351-3329 Singapore: Telex Pte. [. . . ]
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